package com.company.ems.controller;

import com.company.ems.dao.impl.UserDAOImpl;
import com.company.ems.model.User;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/LoginServlet")
public class LoginServlet extends HttpServlet {
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=UTF-8");

        String username = req.getParameter("username");
        String password = req.getParameter("password");

        UserDAOImpl userDAO = new UserDAOImpl();
        User user = userDAO.login(username, password);

        if (user != null) {
            HttpSession session = req.getSession();
            session.setAttribute("loginUser", user);
            resp.sendRedirect(req.getContextPath() + "/dashboard.jsp");
        } else {
            req.setAttribute("errorMsg", "用户名或密码错误！");
            req.getRequestDispatcher("/login.jsp").forward(req, resp);
        }
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doPost(req, resp);
    }
}